<template>
  <div id="map"></div>
</template>

<script lang="ts" setup>
import { onMounted, onBeforeUnmount } from 'vue'
import { Map, View } from 'ol'
import { Tile as TileLayer } from 'ol/layer'
import { OSM } from 'ol/source'
import { defaults, OverviewMap } from 'ol/control'
import { XYZ } from 'ol/source'
import { MAPURL, ATTRIBUTIONS } from '../../constants'

const raster = new TileLayer({
  source: new XYZ({
    attributions: ATTRIBUTIONS,
    url: MAPURL,
    maxZoom: 20
  })
})

let map: Map | null = null

const initMap = () => {
  map = new Map({
    //初始化map
    target: 'map',
    //地图容器中加载的图层
    layers: [
      //加载瓦片图层数据
      raster
    ],
    view: new View({
      projection: 'EPSG:4326', // 坐标系，有EPSG:4326和EPSG:3 857
      center: [0, 0],
      //地图初始显示级别
      zoom: 5
    }),
    //加载控件到地图容器中
    controls: defaults().extend([
      new OverviewMap({
        className: 'ol-overviewmap ol-custom-overviewmap',
        layers: [
          new TileLayer({
            source: new OSM({
              // 使用不同样式的底图
              url: 'https://{a-c}.tile.thunderforest.com/cycle/{z}/{x}/{y}.png' + '?apikey=0e6fc415256d4fbb9b5166a718591d71'
            })
          })
        ],
        collapseLabel: '\u00BB',
        label: '\u00AB',
        collapsed: false
      })
    ])
  })
}

onMounted(() => {
  initMap()
})

onBeforeUnmount(() => {
  if (map) {
    map.dispose()
    map = null
  }
})
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
#map {
  width: 100%;
  height: 100%;
}

/* 控制插件的样式和位置 */
:deep(.ol-custom-overviewmap),
:deep(.ol-custom-overviewmap.ol-uncollapsible) {
  bottom: auto;
  left: auto;
  right: 0;
  top: 0;
}

:deep(.ol-custom-overviewmap:not(.ol-collapsed)) {
  border: 1px solid black;
}

:deep(.ol-custom-overviewmap .ol-overviewmap-map) {
  border: none;
  width: 300px;
}

:deep(.ol-custom-overviewmap .ol-overviewmap-box) {
  border: 2px solid red;
}

:deep(.ol-custom-overviewmap:not(.ol-collapsed) button) {
  bottom: auto;
  left: auto;
  right: 1px;
  top: 1px;
}

:deep(.ol-rotate) {
  top: 170px;
  right: 0;
}
</style>
